<hr>
<p><b>Note:</b> These extensions are not part of the official IMS 
Learning Tools Interoperability specifications.  
Please see the <a href="http://www.imsglobal.org">www.imsglobal.org</a>
web site for the official specifications.
</p>
<p>
This material is Copyright 2012, Charles Severance, Creative Commons CC0. 
See the <a href="about.php">About</a> page for more detail.
</p>
